Hello,
I tried to get forward and asked chatgpt to tell me what to do when reading this page. Then, I first deactivated tpm2 in my bios and fedora started in about 20 seconds. I reactivated it and it took very long time again. I then edited the grub-file (sudo nano /etc/default/grub), adding systemd.tpm2_wait=false behind GRUB_CMDLINE_LINUX=. After that, I entered sudo grub2-mkconfig -o /boot/grub2/grub.cfg, restarted and it was fast, again. Do you think, that is the right way to handle my problem? I’m pretty satisfied now.